APA (7th ed.) Citation

Chrétien, d. T., Raffel, B., & Duggan, J. J. (1999). Perceval: The story of the grail. Yale University Press.

Chicago Style (17th ed.) Citation

Chrétien, de Troyes, Burton Raffel, and Joseph J. Duggan. Perceval: The Story of the Grail. New Haven: Yale University Press, 1999.

MLA (9th ed.) Citation

Chrétien, de Troyes, et al. Perceval: The Story of the Grail. Yale University Press, 1999.